Locking-nut.



PATENTED AUG. 4, 1908..

A. v. BRYCE; .LOGKING NUT.

LPYLIOATI OK FILED SEPT. 16, 1991.

, Witnesses.- 5 (L. W.

"UNITE STATES PAT OFF 19E- ANDREW V. BRYCE, OF PITTSBURG, PENNSYLVANIA,ASSIGNOR TO INTER-STATE FAGTURING COMPANY, OF PITTSBURG, PENNSYLVANIA, ACORPORATION OF ARIZONA TERRITORY.

LOCKING-NUT.

I No. 895,336.

Specification of Letters Patent.

Patented Aug. 4., 1908.

Application filed. September 16, 1907. Serial No. 393,069.

T 0 all whom it may concern:

Be it known that I, Axnnnw V. BRYCE, a. cit-izenof the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and adevice of this character.which s all be ploying a hexagon nut.

. simple and efficient in construction, cheap to manufacture, soconstructed that the. nut and contained bushing may be assembled andmaintained in operative relation to each other without separation duringshipment or handling, and generally adapted to tightly hold a boltwithout danger of loosening as shall be more fully hereinafterdescribed.

Referring to the drawings: Figures 1 and 2 are views in side elevationof the device cm- Fig. 3. is a vertical sectional view on the line III.III. of Fig. 2. Fig. 4. is a lan view of Fig. 1. Fig. 5. is a )lan viewof the outer nut, the interior bushing having been removed. Fig. 6- isa. vertical section on the line VI. \"I. of Fig. 5. F 7. is a. plan viewof the bushing blank. Fig. 8.1s an inverted plan view of F 1g. 7. Fig.9. is an end view of the bushing blank, its assembled form beingindicated in dotted lines. Figs. 10 and 11 are views in elevationshowing a modified construction. Fig. 12. is a vertical sectional viewon the line XII. XII. of Fig. 11. Fig. 13 is a plan view of theconstruction shown in Fig. 10.

Referring to the drawings, 2 is a. turning nut of any suit-able outsideform, either square or hexagon, the interior of which is provided withdownwardly narrowing tapered threads 3 as shown in Fig. 6 adapted toreceive the interior bushing 4 as shown in Fig. 3. The upper face ofnut- 2 is provicl d with a series of serrations or shoulders 5- adaptedto engage the edges of bushing as it is screwed home and to positivelyprevent diseng gemen 2 whereby the turned by a wrench.

bushin and nut will constantly maintain their relative position.

In Figs. 7, 8 and 9 I illustrate my preferred form of bushing, forfacility in casting, whereby the interior and exterior threads 6 and 6'may be cast, thus greatly cheapening the operation. The bushing as shownis cast in two halves 4, 4, approximately semicylindrical as totheirbody portion and joined by a thin web of metal 7, the enlarged headof the bushing having flat parallel sides 8 so that when in position itmay be readily Between the sides 8 at each end are the projecting longerhead portions adapted to bear on the upper face of nut 2. The bushingblank shown in said figures is bent around upon itself, the connectingbridge 7 maintaining its integral connection or being fractured in theoperationwithout affecting its assemblage wlth the nut,

whereupon the bushing is inserted downwardly into the nut cavity asclearly shown in the drawings, particularly Fig. 3, by merely screwingit thereinto.

In applying the device, the bushing and its surrounding nut are screweddownwardly upon abolt as shown in Fig. 1 until the nut 2 binds againstany meeting surface 9, as for instance the face of a fish bar in makinga rail joint, whereupon the bushing 4 is thenscrewed in until it hasmade a tight binding hold. The operation of thus screwing in the bushingwill, by reason of the tapered threads 3 making a correspondinglyexterior-1y tapered thread 6, cause the bushing to bind inwardly uponthe bolt, clearance being provided for such purpose by means of the slot10. The parts are so arranged and designed that the under side of thehead-of the bushing will seat upon the outer face of nut 2, and thelower edges of'faces S will engage the shoul ders 5. As thus assembledthe complete device will act as a nut, securely holding the partstogether by means of the bolt, and disengagement or looscness will beabsolutely prevented. Should for any reason the parts become loose theymay be readily adjusted by merely turning either the nut or the bush-[mg, to take up wear.

- In Figs. 10, 11 and 12 I have shown the bushing I as provided alongone or both sides with an undercut groove 11, providing a. lower thinflange 12, which may be readily driven downwardly by any suitable meansas a .coldchisel so as to positively and more securely engage thelocking shoulders 5.

For the purpose of limitingexcessive inward pressure of the bushingunder turning operation, and feed-of the threads, the nut 2 may beprovided with an'annular limiting shoulder 13 (Fig. 6) against which thelower edge of the bushing will abut when or before it has been drawndown flush with the top of the nut.

By reason of the construction of the device in either form, itwill benoted that the nut may be screwed against a permanent bearing, oragainst a temporary abutment for the pur )ose of causing the bindingaction of the bushing upon the bolt, thus positively holding the nutin'any desired osition.

As thus constructed this eviee in its complete form constitutes astrong, efficient and durable locking nut having great strength andcontinuous holding power.

It may be used in various ada tations, and may be changed or varied indifferent details of construction or design or in other features by theskilled mechanic, but all such changes are to be considered as withinthe scope o the following claims.

' What I claim is:-

1. A locking nut consisting of an outer nut having a bearing base andinterior threads and an outer serrated face, and a divided bushing havinexterior and interior threads and a terminaI head adapted to bear by itsunder face upon said serrated face to prevent reverse motion of thebushing, substantially as set forth.

2. Alocking nut eonsistim of an outer nut having an interior taperedthread, and a divide'd bushing provided with exterior and mteriorthreads and having a depressible por- 40 tion adapted to be bent downagainst the adjacent face of the outer nut, substantially as set forth.

3. A locking nut consisting of an outer nut having an interior ta )eredthread, and a 45 divided bushing provided with exterior and interiorthreads and having an undercut head providing a depressible lip adaptedto be bent down against the adjacent face of the outer nut,substantially as set forth.

4. In a locking nu t, the combination of an outer threaded nut having aserrated outer face, and a divided bushing having exterior and interiorthreads and a turning head adapted to contact by its under face withsaid serrated outer face to prevent reverse rotation, substantially asset forth. V

5. In a locking nut, the combination of an outer nut having interiortapered threads v and a serrated bearing face, and a bushnn 0 assembledtherewith consisting of divide halves having exterior tapered andlnterior straight threads, and a correspondingly di-- vided turning andbearing head adapted to make contact by its under side with said ser- 5rated face, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREW V. BRYCE.

Witnesses:

G120. B. BLEMING C. M. C ARKE.

